Air block for respirator



FIG. 1 is a rear perspective view of an air block for respirator according to the present invention;

FIG. 2 is a right side view of the air block of FIG. 1;

FIG. 3 is a front view of the air block of FIG. 1;

FIG. 4 is a left side view of the air block of FIG. 1;

FIG. 5 is a bottom view of the air block of FIG. 1; and,

FIG. 6 is a top view of the air block of FIG. 1. 

CLAIM The ornamental design for an air block for respirator, as shown and described. 